/*
 * GeekOS C code entry point
 * Copyright (c) 2001,2003,2004 David H. Hovemeyer <daveho@cs.umd.edu>
 * Copyright (c) 2003, Jeffrey K. Hollingsworth <hollings@cs.umd.edu>
 * Copyright (c) 2004, Iulian Neamtiu <neamtiu@cs.umd.edu>
 * $Revision: 1.51 $
 * 
 * This is free software.  You are permitted to use,
 * redistribute, and modify it as specified in the file "COPYING".
 */

#include <geekos/bootinfo.h>
#include <geekos/string.h>
#include <geekos/screen.h>
#include <geekos/mem.h>
#include <geekos/crc32.h>
#include <geekos/tss.h>
#include <geekos/int.h>
#include <geekos/kthread.h>
#include <geekos/trap.h>
#include <geekos/timer.h>
#include <geekos/keyboard.h>

void project0() {
    Print("To Exit hit Ctrl + d.\n");
    Print("This is a test of project0 !\n");
    Keycode keycode;

    while (1) {
        if (Read_Key(&keycode))    //读取键盘按键状态
        {
            if (!((keycode & KEY_SPECIAL_FLAG) || (keycode & KEY_RELEASE_FLAG))) //只处理非特殊按键的按下事件
            {
                int asciiCode = keycode & 0xff;    //低8位为Ascii码

                if ((keycode & KEY_CTRL_FLAG) == KEY_CTRL_FLAG && asciiCode == 'd')    //按下Ctrl键
                {
                    Print("\n---------BYE!--------\n");
                    Exit(1);
                } else {
                    Print("%c", (asciiCode == '\r') ? '\n' : asciiCode);
                }
            }
        }
    }
}



/*
 * Kernel C code entry point.
 * Initializes kernel subsystems, mounts filesystems,
 * and spawns init process.
 */
void Main(struct Boot_Info* bootInfo)
{
    Init_BSS();
    Init_Screen();
    Init_Mem(bootInfo);
    Init_CRC32();
    Init_TSS();
    Init_Interrupts();
    Init_Scheduler();
    Init_Traps();
    Init_Timer();
    Init_Keyboard();


    Set_Current_Attr(ATTRIB(BLACK, GREEN|BRIGHT));
    Print("Welcome to GeekOS!\n");
    Set_Current_Attr(ATTRIB(BLACK, GRAY));


 //   TODO("Start a kernel thread to echo pressed keys and print counts");
    struct Kernel_Thread* kthread = Start_Kernel_Thread(&project0, 0, PRIORITY_NORMAL, false);


    /* Now this thread is done. */
    Exit(0);
}









